Select right answer. A solid steel shaft of radius 12 mm has been forced into a...

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Select right answer. A solid steel shaft of radius 12 mm has been forced into a steel disk of outer radius 20 mm. There was an interference of 0.01 mm on the radius of disk and shaft. The minimum stress in the shaft is Select right answer. A solid steel shaft of radius 12 mm has been forced into a steel disk of outer radius 20 mm. There was an interference of 0.01 mm on the radius of disk and shaft. The minimum stress in the shaft is